Pith Number

pith:TDAVT6C3

pith:2009:TDAVT6C3M7KYA7Y2LUXD6CVEYB

not attested not anchored not stored refs pending

The Keck+Magellan Survey for Lyman Limit Absorption II: A Case Study on Metallicity Variations

Gabriel E. Prochter (1), John M. O'Meara (2), J. Xavier Prochaska (1), Rebecca A. Bernstein (1) ((1) UCO/Lick Observatory at UC Santa Cruz; (2) St. Michael's College), Scott Burles

arxiv:0912.0293 v1 · 2009-12-01 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TDAVT6C3M7KYA7Y2LUXD6CVEYB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:34:02.713482Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98c159f85b67d5807f1a5d2e3f0aa4c0467c15e3b3e3515be673f7de16ced0fa

Aliases

arxiv: 0912.0293 · arxiv_version: 0912.0293v1 · doi: 10.48550/arxiv.0912.0293 · pith_short_12: TDAVT6C3M7KY · pith_short_16: TDAVT6C3M7KYA7Y2 · pith_short_8: TDAVT6C3

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TDAVT6C3M7KYA7Y2LUXD6CVEYB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 98c159f85b67d5807f1a5d2e3f0aa4c0467c15e3b3e3515be673f7de16ced0fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d61a8a0fdc6210a34ac07b7a2dc94057e28e79e7e3189bcc2e79d5e0c74007f7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-01T22:48:37Z",
    "title_canon_sha256": "752d66190e5050d4a1e64e4c3f82f4911a748663c8dc06141066d1d7225bf8b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0293",
    "kind": "arxiv",
    "version": 1
  }
}